
/* @(#)w_j1.c 5.1 93/09/24 */
/*
 * ====================================================
 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
 *
 * Developed at SunPro, a Sun Microsystems, Inc. business.
 * Permission to use, copy, modify, and distribute this
 * software is freely granted, provided that this notice
 * is preserved.
 * ====================================================
 */

/*
 * wrapper of j1,y1
 */

#include "fdlibm.h"
#include <errno.h>

#ifndef _DOUBLE_IS_32BITS

#ifdef __STDC__
    double j1(double x)     /* wrapper j1 */
#else
    double j1(x)            /* wrapper j1 */
    double x;
#endif
{
#ifdef _IEEE_LIBM
    return __ieee754_j1(x);
#else
    double z;
    struct exception exc;
    z = __ieee754_j1(x);
    if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z;
    if(fabs(x)>X_TLOSS) {
        /* j1(|x|>X_TLOSS) */
            exc.type = TLOSS;
            exc.name = "j1";
        exc.err = 0;
        exc.arg1 = exc.arg2 = x;
            exc.retval = 0.0;
            if (_LIB_VERSION == _POSIX_)
                Djy_SaveLastError(ERANGE);
            else if (!matherr(&exc)) {
                Djy_SaveLastError(ERANGE);
            }
        if (exc.err != 0)
           Djy_SaveLastError(exc.err);
            return exc.retval;
    } else
        return z;
#endif
}

#ifdef __STDC__
    double y1(double x)     /* wrapper y1 */
#else
    double y1(x)            /* wrapper y1 */
    double x;
#endif
{
#ifdef _IEEE_LIBM
    return __ieee754_y1(x);
#else
    double z;
    struct exception exc;
    z = __ieee754_y1(x);
    if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z;
        if(x <= 0.0){
#ifndef HUGE_VAL
#define HUGE_VAL inf
        double inf = 0.0;

        SET_HIGH_WORD(inf,0x7ff00000);  /* set inf to infinite */
#endif
        /* y1(0) = -inf  or y1(x<0) = NaN */
        exc.type = DOMAIN;  /* should be SING for IEEE */
        exc.name = "y1";
        exc.err = 0;
        exc.arg1 = exc.arg2 = x;
        if (_LIB_VERSION == _SVID_)
           exc.retval = -HUGE;
        else
           exc.retval = -HUGE_VAL;
        if (_LIB_VERSION == _POSIX_)
           Djy_SaveLastError(EDOM);
        else if (!matherr(&exc)) {
           Djy_SaveLastError(EDOM);
        }
        if (exc.err != 0)
           Djy_SaveLastError(exc.err);
            return exc.retval;
        }
    if(x>X_TLOSS) {
        /* y1(x>X_TLOSS) */
            exc.type = TLOSS;
            exc.name = "y1";
        exc.err = 0;
        exc.arg1 = exc.arg2 = x;
            exc.retval = 0.0;
            if (_LIB_VERSION == _POSIX_)
                Djy_SaveLastError(ERANGE);
            else if (!matherr(&exc)) {
                Djy_SaveLastError(ERANGE);
            }
        if (exc.err != 0)
           Djy_SaveLastError(exc.err);
            return exc.retval;
    } else
        return z;
#endif
}

#endif /* defined(_DOUBLE_IS_32BITS) */





